Regular Season
| Season | TM | G | GS | W | L | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1986 | MIN | 21 | 10 | 3 | 6 | 5.55 | 51 | 1 | 0 | 0 | 84.1 | 106 | 52 | 54 | 11 | 30 | 1 | 1.61 |
1987 | MIN | 4 | 2 | 1 | 0 | 10.95 | 3 | 0 | 0 | 0 | 12.1 | 20 | 15 | 15 | 3 | 10 | 0 | 2.43 |
1988 | MIN | 30 | 30 | 16 | 9 | 2.45 | 83 | 3 | 1 | 0 | 202.1 | 199 | 55 | 70 | 14 | 37 | 7 | 1.17 |
1989 | MIN | 33 | 33 | 17 | 10 | 3.80 | 69 | 4 | 1 | 0 | 196.2 | 214 | 83 | 97 | 15 | 53 | 7 | 1.36 |
1990 | MIN | 31 | 31 | 7 | 18 | 4.53 | 82 | 5 | 1 | 0 | 188.2 | 214 | 95 | 106 | 20 | 39 | 5 | 1.34 |
1991 | MIN | 29 | 22 | 5 | 11 | 4.96 | 51 | 2 | 0 | 0 | 134.1 | 148 | 74 | 82 | 24 | 42 | 5 | 1.41 |
| Career | 148 | 128 | 49 | 54 | 4.11 | 339 | 15 | 3 | 0 | 818.2 | 901 | 374 | 424 | 87 | 211 | 25 | 1.36 |
Guardians 
Tigers 
Royals 
Twins 
White Sox 
STL 
Phillies 
Braves 
Brewers 
Cubs 
Dodgers 
Padres 
Yankees 
Orioles 
Astros 
Mariners 
PIT 
MIA 
WSH 
BOS 
TEX 
